Table valve generally use ball valve, table valve after the cone type plunger valve.
Advantages of ball valve
Simple structure, small volume, light weight.
Fluid resistance is small, full diameter ball valve basically no resistance.
Good sealing performance. The ball valve has two sealing surfaces, and the sealing of the hard sealing ball valve is manually ground, until the spool and the sealing ring can be used. Like the corrosion resistant ball valve, the valve body cavity will be widely used a variety of plastics, good sealing performance, in the vacuum environment has been widely used.
Easy to operate. As a switch, cut off or change the flow of the medium of the valve, in use only need to rotate 90 degrees can, and the torque is small.
A wide range of applications and applications. Ball valve diameter from small to a few millimeters, large to a few meters, from really high altitude to high pressure can be used. Moreover, ball valves have been widely used in petroleum, chemical industry, power generation, paper making, atomic energy, aviation and rocket fields.